Touch display device, touch display panel, array substrate and driving method

Abstract

The invention provides a touch display device, a touch display panel, an array substrate and a driving method. The array substrate comprises a first substrate, a plurality of micro light-emitting devices, a plurality of micro driving devices and a plurality of touch driving electrodes, wherein the micro light-emitting devices, the micro driving devices and the touch driving electrodes are located on one side of the first substrate. And each micro-driving device is arranged corresponding to the plurality of micro-light-emitting devices and is used for driving the plurality of micro-light-emitting devices to emit light. And at least one touch driving electrode is arranged corresponding to at least one micro-driving device. The touch driving electrodes receive signals transmitted to the correspondingly arranged micro-driving devices as touch driving signals, or the touch driving electrodes receive signals output by the correspondingly arranged micro-driving devices as touch driving signals, so that a main driving chip does not need to provide the touch driving signals for the touch driving electrodes any more, and the touch driving efficiency is improved. Therefore, the power consumption of the main driving chip is greatly reduced, and the power consumption of the array substrate, the touch display panel and the touch display device is further reduced.

Description

[0001] This application is a divisional application with the application date of August 20, 2020, application number 202010842534.4, and the name of the invention being “A touch display device, touch display panel, array substrate and driving method”. Technical Field

[0002] The present invention relates to the field of display technology, and more specifically, to a touch display device, a touch display panel, an array substrate and a driving method. Background Art

[0003] With the development of science and technology, display panels integrated with touch panels have become an indispensable component of display devices. Most of the existing technologies directly add a touch panel to the display panel to realize the touch display function. In addition, most of the touch drive electrodes and touch sensing electrodes on the touch panel are connected to the main drive chip on the display panel to provide a touch drive signal to the touch drive electrode through the main drive chip to detect the touch position. However, since the main drive chip not only needs to provide the display panel with the signal required for display, but also needs to provide the touch drive signal to the touch drive electrode, the power consumption of the main drive chip is relatively large, which is not conducive to the application of touch display panels. Summary of the invention

[0004] In view of this, the present invention provides a touch display device, a touch display panel, an array substrate and a driving method to reduce the power consumption of a main driving chip.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An array substrate, comprising:

[0007] a first substrate;

[0008] A plurality of micro light emitting devices, a plurality of micro driving devices and a plurality of touch driving electrodes are located on one side of the first substrate;

[0009] Each of the micro-driving devices is arranged corresponding to a plurality of the micro-light-emitting devices, and is used to drive the plurality of the micro-light-emitting devices to emit light;

[0010] At least one of the touch drive electrodes is arranged corresponding to at least one of the micro-drive devices; the touch drive electrode receives a signal transmitted to the corresponding micro-drive device as a touch drive signal, or the touch drive electrode receives a signal output by the corresponding micro-drive device as a touch drive signal.

[0011] A touch control driving method for an array substrate, wherein the array substrate comprises a plurality of micro light emitting devices, a plurality of micro driving devices and a plurality of touch control driving electrodes, the method comprising:

[0012] The micro-driving device receives the signal, and the touch driving electrode multiplexes the signal of the micro-driving device corresponding to the setting as the touch driving signal;

[0013] Alternatively, the micro-driving device outputs a signal, and the touch driving electrode uses the signal output by the corresponding micro-driving device as the touch driving signal.

[0014] A touch display panel comprises an array substrate and a color film substrate arranged opposite to the array substrate, wherein the array substrate is the array substrate described above.

[0015] A touch display device comprises the touch display panel as described above.

[0016] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0017] The touch display device, touch display panel, array substrate and driving method provided by the present invention, the array substrate includes multiple micro-light-emitting devices and multiple micro-driving devices that drive the micro-light-emitting devices to emit light. Since at least one touch driving electrode is correspondingly arranged with at least one micro-driving device, and the touch driving electrode receives a signal transmitted to the correspondingly arranged micro-driving device as a touch driving signal, or the touch driving electrode receives a signal output by the correspondingly arranged micro-driving device as a touch driving signal, therefore, it is no longer necessary for the main driving chip to provide the touch driving signal to the touch driving electrode, thereby greatly reducing the power consumption of the main driving chip, and further reducing the power consumption of the array substrate, the touch display panel and the touch display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A schematic diagram of a top view of an array substrate provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a top view of an array substrate provided in another embodiment of the present invention;

[0021] Figure 3 A schematic diagram of a top view of an array substrate provided in another embodiment of the present invention;

[0022] Figure 4 A schematic diagram of a top view of an array substrate provided in another embodiment of the present invention;

[0023] Figure 5 A timing diagram of the row scanning signals S1 to Sn provided in one embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the circuit structure of a micro-drive device provided by one embodiment of the present invention;

[0025] Figure 7 A control signal timing diagram of a micro-drive device provided by one embodiment of the present invention;

[0026] Figure 8 A timing diagram of row scanning signals S1 to Sn provided in another embodiment of the present invention;

[0027] Fig. 9 A schematic diagram of a three-dimensional structure of a partial structure of an array substrate provided by an embodiment of the present invention;

[0028] Fig.10 An array substrate provided by an embodiment of the present invention is Fig. 9 The schematic cross-sectional structure diagram of the cutting line AA' shown;

[0029] Fig.11 A schematic three-dimensional structural diagram of a portion of an array substrate provided by another embodiment of the present invention;

[0030] Fig.12 Another embodiment of the present invention provides an array substrate along Fig. 9 The schematic cross-sectional structure diagram of the cutting line AA' shown;

[0031] Fig.13 Another embodiment of the present invention provides an array substrate along Fig. 9 The schematic cross-sectional structure diagram of the cutting line AA' shown;

[0032] Fig.14 A schematic diagram of a partial top view of the structure of an array substrate provided by an embodiment of the present invention;

[0033] Fig.15 A schematic three-dimensional structural diagram of a portion of an array substrate provided by another embodiment of the present invention;

[0034] Fig.16 for Fig.15 The schematic cross-sectional structure diagram of the array substrate along the cutting line BB' is shown;

[0035] Fig.17 Another embodiment of the present invention provides an array substrate along Fig.15 A schematic cross-sectional structure diagram of the cutting line BB' shown;

[0036] Fig.18A schematic diagram of the structure of a touch driving electrode and a touch sensing electrode provided by an embodiment of the present invention;

[0037] Fig.19 A schematic diagram of the structure of a touch driving electrode and a touch sensing electrode provided by another embodiment of the present invention;

[0038] Fig. 20 A schematic diagram of the structure of a touch driving electrode, a touch sensing electrode and a main driving chip provided by an embodiment of the present invention;

[0039] Fig.21 A schematic diagram of the structure of a touch driving electrode, a touch sensing electrode and a main driving chip provided by another embodiment of the present invention;

[0040] Fig. 22 A timing diagram of row scanning signals S1 to Sn provided in another embodiment of the present invention;

[0041] Fig.23 A schematic diagram of the structure of a touch driving electrode, a touch sensing electrode and a main driving chip provided by another embodiment of the present invention;

[0042] Fig.24 A flow chart of a driving method of an array substrate provided by an embodiment of the present invention;

[0043] Fig.25 A flow chart of a driving method of an array substrate provided in another embodiment of the present invention;

[0044] Fig.26 A schematic diagram of a partial cross-sectional structure of a touch display panel provided by an embodiment of the present invention;

[0045] Fig. 27 A schematic diagram of a touch display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The above is the core idea of ​​the present invention. In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] An embodiment of the present invention provides an array substrate, such as Figure 1 As shown, Figure 1A schematic diagram of a top view structure of an array substrate provided for an embodiment of the present invention, wherein the array substrate comprises a first substrate 1, a plurality of micro-light emitting devices 2 located on one side of the first substrate 1, a plurality of micro-driving devices 3 and a plurality of touch driving electrodes 4.

[0048] Each micro-driving device 3 is arranged corresponding to a plurality of micro-light-emitting devices 2, and the micro-driving device 3 is used to drive the plurality of micro-light-emitting devices 2 to emit light. Optionally, the micro-light-emitting device 2 is a Micro-LED, etc. It should be noted that the embodiment of the present invention is described by only taking the array arrangement of a plurality of micro-driving devices 3 as an example, and is not limited thereto.

[0049] Alternatively, if Figure 1 As shown, one micro-driving device 3 is correspondingly arranged with three micro-light-emitting devices 2, that is, one micro-driving device 3 is respectively connected with three micro-light-emitting devices 2 to drive the three micro-light-emitting devices 2 to emit light. Further optionally, the three micro-light-emitting devices 2 can be micro-light-emitting devices 2 that generate red light, green light, and blue light, respectively. Of course, the present invention is not limited to this. In other embodiments, each micro-driving device 3 can also be connected with two, four, five or even more micro-light-emitting devices 2, which will not be described one by one here.

[0050] In the embodiment of the present invention, at least one touch driving electrode 4 is disposed corresponding to at least one micro-driving device 3. In some specific embodiments, one touch driving electrode 4 can be disposed corresponding to one micro-driving device 3, such as Figure 1 As shown, in the direction perpendicular to the first substrate 1 , the projection of a micro-driving device 3 overlaps with the projection of a touch driving electrode 4 .

[0051] In some other specific embodiments, one touch driving electrode 4 may also be arranged corresponding to a plurality of micro-driving devices 3, such as Figure 2 As shown, Figure 2 The schematic diagram of the top view structure of the array substrate provided in another embodiment of the present invention shows that in the direction perpendicular to the first substrate 1 , the projection of one touch driving electrode 4 overlaps with the projections of two micro-driving devices 3 .

[0052] In some other specific embodiments, a plurality of touch driving electrodes 4 may also be arranged corresponding to one micro-driving device 3, such as Figure 3 As shown, Figure 3 The schematic diagram of the top view structure of the array substrate provided in another embodiment of the present invention shows that in the direction perpendicular to the first substrate 1 , the projections of two touch driving electrodes 4 overlap with the projection of one micro-driving device 3 .

[0053] exist Figures 1 to 3 In the structure shown in the figure, the projection of the touch driving electrode 4 only overlaps with the projection of the micro driving device 3 as an example for description, but the present invention is not limited to this. In other embodiments, such as Figure 4 As shown, Figure 4 This is a schematic diagram of a top view of the array substrate provided in another embodiment of the present invention, in which the projection of the touch driving electrode 4 may also overlap with the projection of the micro light emitting device 2 .

[0054] That is to say, the corresponding arrangement of the touch driving electrode 4 and the micro driving device 3 in the embodiment of the present invention is not the corresponding positional relationship, but the corresponding signal transmission relationship, that is, the touch driving electrode 4 receives the signal of the corresponding micro driving device 3, but the touch driving electrode 4 can not only overlap with the projection of the corresponding micro driving device 3, but also overlap with the projection of other devices such as the micro light emitting device 2. Among them, the specific positional relationship between the touch driving electrode 4 and the micro driving device 3 can be determined according to parameters such as the size of the touch driving electrode 4 and the micro driving device 3, which will not be repeated here.

[0055] Since at least one touch drive electrode 4 is arranged corresponding to at least one micro-drive device 3, in some embodiments of the present invention, the touch drive electrode 4 can reuse the signal transmitted to the corresponding micro-drive device 3 as the touch drive signal, that is, each touch drive electrode 4 receives the signal transmitted to the corresponding micro-drive device 3 as the touch drive signal, so that the main drive chip does not need to specifically generate the touch drive signal, which greatly reduces the power consumption of the main drive chip.

[0056] Of course, the present invention is not limited to this. In other embodiments of the present invention, the micro-drive device 3 can also be used to generate a touch drive signal. That is, each touch drive electrode 4 receives a signal output by the corresponding micro-drive device 3 as a touch drive signal. Since the touch drive signal of each touch drive electrode 4 is generated by the corresponding micro-drive device 3, there is no need for the main drive chip to generate the touch drive signal, which greatly reduces the power consumption of the main drive chip. In addition, since each micro-drive device 3 only needs to generate the touch drive signal of the corresponding touch drive electrode 4, for an array substrate having multiple micro-drive devices 3, the power consumption of each micro-drive device 3 is not large, so that the power consumption of the entire array substrate is also small.

[0057] In the embodiment of the present invention, Figures 1 to 4 As shown, the array substrate further includes a main driving chip 5, a plurality of row driving devices 6 and a plurality of column driving devices 7. The main driving chip 5 receives image data input from the outside, determines a scanning signal and a data signal according to the image data, and transmits the scanning signal to the row driving device 6 and the data signal to the column driving device 7.

[0058] Specifically, Figure 4As shown, each row driving device 6 is connected to a row of micro-driving devices 3, and each row driving device 6 activates the row of micro-driving devices 3 by inputting a first sub-signal to the row of micro-driving devices 3 connected thereto, so that the row of micro-driving devices 3 receives the data signal output by the corresponding column driving device 7. Among them, multiple row driving devices 6 sequentially input the first sub-signal to the micro-driving devices 3 connected thereto, that is, the micro-driving devices 3 receive and store the data signal output by the corresponding column driving device 7 row by row. Afterwards, the row driving device 6 inputs a second sub-signal to the row of micro-driving devices 3 connected thereto, and after receiving the second sub-signal, the micro-driving device 3 drives the micro-light-emitting device 2 to emit light according to the received data signal.

[0059] That is to say, in some embodiments of the present invention, Figure 5 As shown, Figure 5 A timing diagram of each row of scanning signals S1 to Sn is provided for an embodiment of the present invention. The scanning signal includes a first sub-signal G1 and a second sub-signal G2. After receiving the first sub-signal G1, the micro-driving device 3 receives a data signal of a correspondingly arranged micro-light-emitting device 2. After receiving the second sub-signal G2, the micro-driving device 3 drives the correspondingly arranged micro-light-emitting device 2 to emit light according to the second sub-signal G2 and the data signal.

[0060] In some embodiments of the present invention, Figure 6 As shown, Figure 6 The circuit structure diagram of the micro-driving device 3 provided in one embodiment of the present invention includes a data buffer 30, a counter 31 and a comparator 32. After the micro-driving device 3 receives the first sub-signal G1, the data buffer 30 receives and stores the data signal of the micro-light-emitting device 2 connected to the micro-driving device 3. After the counter 31 receives the second sub-signal G2, it outputs a digital counting signal indicating the number of edges of the second sub-signal G2 to the comparator 32, wherein the number of edges is the number of rising edges, the number of falling edges, or the sum of the number of rising edges and falling edges. At the same time, the data buffer 30 outputs a digital data signal representing the desired gray scale of the micro-light-emitting device 2 to be driven to the comparator 32. The comparator 32 compares the digital data signal output by the data buffer 30 with the digital counting signal output by the counter 31. If the desired gray scale represented by the digital data signal is not greater than the number of edges indicated by the digital counting signal, the first control signal is output to control the micro-light-emitting device 2 to emit light. Otherwise, the second control signal is output to control the micro-light-emitting device 2 to stop emitting light.

[0061] like Figure 7 As shown, Figure 7The control signal timing diagram of the micro-driving device 3 provided in one embodiment of the present invention is described by taking the expected grayscale equal to 5 as an example. The data buffer 30 outputs a digital data signal representing the expected grayscale 5 to the comparator 32, and the counter 31 outputs a digital counting signal indicating the number of edges of the second sub-signal G2 to the comparator 32. For example, during the t0 period, the counter 31 outputs a digital counting signal indicating that the number of edges is 0 to the comparator 32. Since 0 is not greater than 5, the comparator 32 outputs the first control signal K1 to control the micro-light-emitting device 2 to emit light. For example, during the t1 period, the counter 31 outputs a digital counting signal indicating that the number of edges is 1 to the comparator 32. Since 1 is not greater than 5, the comparator 32 outputs the first control signal K1 to control the micro-light-emitting device 2 to emit light. During the t2 period, the counter 31 outputs a digital counting signal indicating that the number of edges is 2 to the comparator 32. Since 2 is not greater than 5, the comparator 32 outputs The first control signal K1 controls the micro-light-emitting device 2 to emit light; during the t3 period, the counter 31 outputs a digital counting signal indicating that the number of edges is 3 to the comparator 32. Since 3 is not greater than 5, the comparator 32 outputs the first control signal K1 to control the micro-light-emitting device 2 to emit light; during the t4 period, the counter 31 outputs a digital counting signal indicating that the number of edges is 4 to the comparator 32. Since 4 is not greater than 5, the comparator 32 outputs the first control signal K1 to control the micro-light-emitting device 2 to emit light; during the t5 period, the counter 31 outputs a digital counting signal indicating that the number of edges is 5 to the comparator 32. Since 5 is not greater than 5, the comparator 32 outputs the first control signal K1 to control the micro-light-emitting device 2 to emit light; during the t6 period, the counter 31 outputs a digital counting signal indicating that the number of edges is 6 to the comparator 32. Since 6 is greater than 5, the comparator 32 outputs the second control signal K2 to control the micro-light-emitting device 2 to stop emitting light.

[0062] The longer the first control signal K1 received by the micro-light-emitting device 2 is, the longer the light emission time is, the greater the brightness is, and the greater the grayscale is. It should be noted that the second sub-signal G2 has 255 pulse signals, representing 255 grayscales. It should also be noted that in order for people to perceive the difference between lower grayscales, the brightness difference between two lower grayscales can be relatively small, and in order to perceive the difference between higher grayscales, the brightness difference between two higher grayscales can be relatively large. Based on this, Figure 5 and Figure 7 As shown, the gap between the edges (such as rising edges) of two adjacent pulse signals of the second sub-signal G2 can gradually increase.

[0063] Optionally, in some embodiments of the present invention, Figure 5As shown, the second sub-signal G2 includes at least two pulse signals with different pulse widths, that is, the gap D3 between the edges (such as rising edges) of two adjacent pulse signals can be gradually increased by not only gradually increasing the spacing D1 between adjacent pulse signals, but also gradually increasing the width D2 of the pulse signal, thereby gradually increasing the brightness difference between the grayscales. Of course, the present invention is not limited to this. In other embodiments, the second sub-signal G2 can include at least two pulse signals with the same pulse width D2, that is, the distinction between grayscales can be achieved only by gradually increasing the width D1 between the pulse signals.

[0064] Optionally, in some embodiments of the present invention, the touch drive electrode 4 receives a scan signal from a corresponding micro-drive device 3 and multiplexes the scan signal into a touch drive signal, thereby reducing the power consumption of the main drive chip while meeting the touch drive requirements of the touch drive electrode 4.

[0065] Optionally, in some embodiments of the present invention, the second sub-signal G2 in the touch drive electrode 4 multiplexed scan signal is a touch drive signal. Figure 5 As shown, since the micro-driving devices 3 of all rows synchronously receive the second sub-signal G2 in the T2 period, the touch driving electrodes 4 multiplex the second sub-signal G2 in the scanning signal as the touch driving signal, so that all the touch driving electrodes 4 can perform touch detection at the same time.

[0066] It should also be noted that if Figure 5 As shown, in some embodiments of the present invention, the first sub-signal G1 also includes multiple pulse signals. Of course, the present invention is not limited to this. In its embodiments, the first sub-signal G1 may include one pulse signal, which will not be repeated here.

[0067] In some embodiments of the present invention, Figure 5 As shown in FIG. 1 , after all the micro-driving devices 3 in all rows receive the first sub-signal G1, that is, in the T1 period, the first sub-signal G1 is input to the micro-driving devices 3 row by row, and then in the T2 period, the second sub-signal G2 is input to all the micro-driving devices 3 in all rows at the same time. However, the present invention is not limited to this. In some other embodiments, such as Figure 8 As shown, Figure 8 The timing diagram of each row of scanning signals S1 to Sn provided in another embodiment of the present invention, that is, after each row of micro-driving devices 3 receives the first sub-signal G1, the second sub-signal G2 is immediately inputted thereto, that is, the second sub-signals G2 of the micro-driving devices 3 in different rows are not synchronized. At this time, the touch driving electrodes 4 receive the touch driving signals in time division, that is, the touch driving electrodes 4 do not perform touch detection at the same time.

[0068] In some embodiments of the present invention, the micro-driving device 3 is a Micro-IC. Since the Micro-IC is a chip structure that has an internally integrated driving circuit and has been packaged or semi-packaged, therefore, in some embodiments of the present invention, such as Fig. 9 and Fig.10 As shown, Fig. 9 A three-dimensional structural diagram of a part of the structure of an array substrate provided by an embodiment of the present invention, Fig.10 An array substrate provided by an embodiment of the present invention is Fig. 9 As shown in the cross-sectional structure diagram of the cutting line AA′, the touch driving electrode 4 is located on a side surface of the correspondingly arranged micro-driving device 3 away from the first substrate 1, so as to reduce the power consumption of the main driving chip 5 and simplify the design of the array substrate.

[0069] Of course, the present invention is not limited to this. In some other embodiments, the touch driving electrode 4 may not be located on the surface of the micro-driving device 3 facing away from the first substrate 1, but may be located on the side of the correspondingly arranged micro-driving device 3 facing away from the first substrate 1, that is, an insulating layer may be provided between the touch driving electrode 4 and the micro-driving device 3. In this case, the micro-driving device 3 is not limited to Micro-IC.

[0070] Since the touch drive electrode 4 is located on the side of the micro-drive device 3 away from the first substrate 1, and the wiring connected to the micro-drive device 3 and transmitting signals to it is located on the side of the micro-drive device 3 close to the first substrate 1, the interference of the signal in the wiring at the bottom of the micro-drive device 3 on the touch drive signal in the touch drive electrode 4 can be reduced.

[0071] Of course, the present invention is not limited to this. In some other embodiments, such as Fig.11 As shown, Fig.11 A three-dimensional structural schematic diagram of a partial structure of an array substrate provided in another embodiment of the present invention, wherein the touch drive electrode 4 may also be located on a side of the micro-drive device 3 close to the first substrate 1, such as on a pixel substrate 8 at the bottom of the micro-drive device 3. In this case, other signals may be shielded by a shielding circuit, etc., to prevent other signals from interfering with the touch drive signal in the touch drive electrode 4.

[0072] It should be noted that the pixel substrate 8 is located between the first substrate 1 and the micro-driving device 3. The pixel substrate 8 may have various ports of the micro-driving device 3, may have an electrical interconnection structure for realizing the connection between the micro-driving device 3 and the micro-light-emitting device 2, and may also have an electrical interconnection structure for realizing the connection between the micro-driving devices 3, which will not be described one by one here.

[0073] Based on any of the above embodiments, in some embodiments of the present invention, Fig.12 As shown, Fig.12Another embodiment of the present invention provides an array substrate along Fig. 9 In the cross-sectional structural diagram of the cutting line AA' shown in the figure, the micro-driving device 3 includes a scanning signal receiving terminal SIN, and the micro-driving device 3 receives the scanning signal through the scanning signal receiving terminal SIN. The touch driving electrode 4 is electrically connected to the scanning signal receiving terminal SIN of the micro-driving device 3 corresponding to it, so as to receive the scanning signal through the scanning signal receiving terminal SIN and multiplex the scanning signal into the touch driving signal.

[0074] Alternatively, in some embodiments of the present invention, Fig.13 As shown, Fig.13 Another embodiment of the present invention provides an array substrate along Fig. 9 As shown in the cross-sectional structural diagram of the cutting line AA', the micro-driving device 3 includes a signal output terminal OUT, and the touch driving electrode 4 is electrically connected to the signal output terminal OUT of the micro-driving device 3 correspondingly arranged thereto to receive the touch driving signal output by the micro-driving device 3 through the signal output terminal OUT.

[0075] Alternatively, in some embodiments of the present invention, Fig.14 As shown, Fig.14 The schematic diagram of a partial top view of the structure of the array substrate provided for one embodiment of the present invention further includes a plurality of scan lines S located on the first substrate 1. The plurality of scan lines S are electrically connected to the plurality of micro-driving devices 3, respectively, and the scan lines S are used to provide scan signals to the micro-driving devices 3 connected thereto. The touch driving electrode 4 is connected to the scan line S connected to the micro-driving device 3 corresponding thereto, such as the touch driving electrode 4 is connected to the scan line S through the via 9, so as to receive the scan signal through the scan line S, and multiplex the scan signal into the touch driving signal.

[0076] It should be noted that in the embodiment of the present invention, when the positional relationship between the micro-driving device 3 and the touch driving electrode 4 and the positional relationship between the scan line S and the touch driving electrode 4 are determined, in order to simplify the manufacturing process, the touch driving electrode 4 can be connected to the scan line S, or the touch driving electrode 4 can be connected to the scan signal receiving terminal SIN of the micro-driving device 3.

[0077] Based on any of the above embodiments, in some embodiments of the present invention, Fig.15 and Fig.16 As shown, Fig.15 A three-dimensional structural diagram of a partial structure of an array substrate provided by another embodiment of the present invention, Fig.16 for Fig.15 The cross-sectional structure diagram of the array substrate along the cutting line BB′ shown in the figure shows that the array substrate further includes a plurality of touch sensing electrodes 10, and the touch sensing electrodes 10 are arranged corresponding to at least one touch driving electrode 4. Moreover, the touch sensing electrodes 10 and the touch driving electrodes 4 are arranged in the same layer.

[0078] Optionally, the touch driving electrode 4 is located at a side of the micro-driving device 3 corresponding thereto which is away from the first substrate 1, and the touch sensing electrode 10 is located at a side of the micro-driving device 3 corresponding thereto which is away from the first substrate 1, so as to prevent the signal in the wiring at the bottom of the micro-driving device 3 from interfering with the signal in the touch driving electrode 4 and the touch sensing electrode 10. Of course, the present invention is not limited thereto, and in other embodiments, the touch driving electrode 4 and the touch sensing electrode 10 may be located at a side of the micro-driving device 3 close to the first substrate 1.

[0079] Optionally, in some specific embodiments of the present invention, in order to simplify the design, the touch sensing electrodes 10 and the touch driving electrodes 4 are both located on the surface of the micro-driving device 3 facing away from the first substrate 1, and at least one touch sensing electrode 10 and at least one touch driving electrode 4 are located on the surface of the same micro-driving device 3 facing away from the first substrate 1. Of course, the present invention is not limited to this, and in other embodiments, a planarization layer or an insulating layer may be provided between the film layer where the touch sensing electrodes 10 and the touch driving electrodes 4 are located and the micro-driving device 3, which will not be described in detail here.

[0080] Of course, in other embodiments of the present invention, such as Fig.17 As shown, Fig.17 Another embodiment of the present invention provides an array substrate along Fig.15 As shown in the cross-sectional structural diagram of the cutting line BB', the touch sensing electrode 10 and the touch driving electrode 4 can also be located in different layers, that is, a second substrate 11 can be further included between the touch sensing electrode 10 and the touch driving electrode 4. Optionally, the touch driving electrode 4 is located on a side of the micro-driving device 3 away from the first substrate 1, the second substrate 11 is located on a side of the touch driving electrode 4 away from the first substrate 1, and the touch sensing electrode 10 is located on a side of the second substrate 11 away from the touch driving electrode 4.

[0081] Optionally, in some specific embodiments of the present invention, in order to simplify the design, the touch drive electrode 4 is located on a side surface of the micro-driving device 3 away from the first substrate 1, the second substrate 11 is located on a side surface of the touch drive electrode 4 away from the first substrate 1, and the touch sensing electrode 10 is located on a side surface of the second substrate 11 away from the touch drive electrode 4.

[0082] Of course, the second substrate 11 is used as an example in the present invention. In other embodiments, an insulating layer may be used to replace the second substrate 11. In addition, a planarization layer or an insulating layer may also be provided between the film layer where the touch drive electrode 4 is located and the micro-drive device 3, which will not be described in detail.

[0083] Based on any of the above embodiments, in some other embodiments of the present invention, in a direction perpendicular to the first substrate 1, the projection of the touch sensing electrode 10 is located around the projection of the touch driving electrode 4 arranged corresponding to it, and at least partially surrounds the projection of the touch driving electrode 4, so as to perform touch detection through the mutual capacitance between the touch sensing electrode 10 and the touch driving electrode 4.

[0084] like Fig.18 As shown, Fig.18 A schematic structural diagram of a touch driving electrode 10 and a touch sensing electrode 4 provided in an embodiment of the present invention, wherein the projection of the touch driving electrode 4 is a square, and the touch sensing electrode 10 is a field-shaped electrode with a notch. At this time, the projection of the touch sensing electrode 10 partially surrounds the projection of the touch driving electrode 4.

[0085] like Fig.19 As shown, Fig.19 A schematic structural diagram of a touch driving electrode 10 and a touch sensing electrode 4 provided in another embodiment of the present invention, in a direction perpendicular to the first substrate 1, a projection of the touch sensing electrode 10 is in the shape of a grid including at least two meshes, a projection of one mesh includes a projection of at least one touch driving electrode 4, and at this time, the projection of the touch sensing electrode 10 completely surrounds the projection of the touch driving electrode 4.

[0086] exist Fig.18 and Fig.19 In the structure shown, the projection of the touch driving electrode 4 is a square, and the projection of the touch sensing electrode 10 is a field shape or a nearly field shape. The structure is not limited to this. In other embodiments, the projection of the touch sensing electrode 10 can also be a circular ring or a nearly circular ring, and the projection of the touch driving electrode 4 can also be a diamond or a circle.

[0087] Optionally, the shape of the projection of the touch drive electrode 4 is similar to the shape of the projection of the touch sensing electrode 10, such as both are approximately circular or approximately square, so that the spacing between each area between the two is approximately equal, so that the touch detection sensitivity of each area between the two is approximately equal, and the touch detection sensitivity of the entire substrate is basically consistent.

[0088] It should be noted that in Fig.18 and Fig.19 In the structure shown, the touch driving electrodes 4 and the touch sensing electrodes 10 may be arranged in the same layer or in different layers, and the present invention is not limited thereto.

[0089] Based on any of the above embodiments, in other embodiments of the present invention, Fig. 20 As shown, Fig. 20A schematic structural diagram of a touch driving electrode 10, a touch sensing electrode 4 and a main driving chip 5 provided in an embodiment of the present invention, wherein a plurality of touch sensing electrodes 10 are arranged in an array, and a plurality of micro-driving devices 3 are arranged in an array, such as a plurality of touch sensing electrodes 10 are arranged in an array along a first direction Y and a second direction X, and a plurality of micro-driving devices 3 are arranged in an array along a first direction Y and a second direction X. At this time, the position of each touch sensing electrode 10, i.e., the X coordinate and the Y coordinate, is known.

[0090] Each touch sensing electrode 10 is arranged corresponding to a touch driving electrode 4 corresponding to at least one micro-driving device 3, such as the projection of each touch sensing electrode 10 on the first substrate 1 surrounds the projections of multiple touch driving electrodes 4 on the first substrate 1, and the projection of each touch driving electrode 4 on the first substrate 1 overlaps with the projection of one micro-driving device 3 on the first substrate 1. In addition, the main driving chip 5 is connected to the multiple touch sensing electrodes 10 respectively, and is used to determine the touch position according to the position of the touch sensing electrode 10 when any touch sensing electrode 10 outputs a sensing signal.

[0091] Specifically, the micro-driving device 3 inputs a touch driving signal to the touch driving electrode 4 corresponding to the micro-driving device 3. Since each touch sensing electrode 10 is corresponding to the touch driving electrode 4 corresponding to at least one micro-driving device 3, a mutual capacitance is formed between the touch sensing electrode 10 and the corresponding touch driving electrode 4. When there is a touch, the capacitance value of the mutual capacitance between the touch sensing electrode 10 and the touch driving electrode 4 at the touch position will change, and the touch sensing electrode 10 will output a sensing signal to the main driving chip 5, and the main driving chip 5 determines the touch position according to the position (including the X coordinate and the Y coordinate) of the touch sensing electrode 10.

[0092] It should be noted that the touch driving signal input by the micro-driving device 3 to the corresponding touch driving electrode 4 is a scanning signal, and the input scanning signals are synchronous, for example, Figure 5 The second sub-signal G2 shown in FIG. 1 may also be asynchronous, such as Figure 8 Alternatively, the touch driving signal input by the micro-driving device 3 to the corresponding touch driving electrode 4 is a independently generated signal, which can be set as needed.

[0093] Of course, in other embodiments of the present invention, such as Fig.21 As shown, Fig.21This is a schematic structural diagram of a touch driving electrode 10, a touch sensing electrode 4 and a main driving chip 5 provided in another embodiment of the present invention. The touch sensing electrode 10 can also extend along the first direction Y, and a plurality of touch sensing electrodes 10 are sequentially arranged along the second direction X, and the first direction Y intersects the second direction X. A plurality of micro-driving devices 3 are arranged in an array along the first direction Y and the second direction X, with the second direction X being the row direction, and the touch driving electrodes 4 correspondingly arranged in the same row of micro-driving devices 3 are electrically connected.

[0094] The main driving chip 5 is connected to multiple touch sensing electrodes 10 respectively, and the main driving chip 5 is electrically connected to multiple micro-driving devices 3. The main driving chip 5 is used to determine the touch position according to the position of the touch sensing electrode 10 and the position of the micro-driving device 3 that is outputting a touch driving signal or receiving a scanning signal when receiving a sensing signal output by any touch sensing electrode 10.

[0095] In a specific embodiment, the timing diagram of the scan signal is as follows: Fig. 22 As shown, Fig. 22 A timing diagram of scan signals S1 to Sn of each row provided in another embodiment of the present invention, wherein a plurality of row drive devices 6 input scan signals to the micro drive device 3 row by row, and when there is a touch, the capacitance value of the mutual capacitance between the touch sensing electrode 10 and the touch drive electrode 4 at the touch position will change, and the touch sensing electrode 10 will output a sensing signal to the main drive chip 5, and the main drive chip 5 determines the X coordinate according to the coordinate of the touch sensing electrode 10, and determines the Y coordinate according to the coordinate of the row where the micro drive device 3 to which the scan signal is being input is located, so that the touch position can be determined according to the X coordinate and the Y coordinate.

[0096] In another specific embodiment, the touch driving signal generated by the micro-driving device 3 is input into the micro-driving devices 3 in different rows in a time-sharing manner, and since the micro-driving device 3 is connected to the main driving chip 5, the main driving chip 5 can know the time when the micro-driving devices 3 in different rows output the touch driving signal. When there is a touch, the main driving chip 5 determines the X coordinate according to the coordinates of the touch sensing electrode 10, and determines the Y coordinate according to the coordinates of the row where the micro-driving device 3 that is outputting the touch driving signal is located, so that the touch position can be determined according to the X coordinate and the Y coordinate.

[0097] Fig. 20 and Fig.21 In the structure shown, only the touch sensing electrodes 10 are in a grid shape and the touch driving electrodes 4 are in a square shape. The present invention is not limited thereto. In other embodiments, for example, Fig.23 As shown, Fig.23This is a schematic structural diagram of a touch driving electrode 10, a touch sensing electrode 4 and a main driving chip 5 provided in another embodiment of the present invention. The touch sensing electrode 10 may also be a strip electrode extending along the first direction Y, and the touch driving electrode 4 may also be a strip electrode extending along the second direction X, etc.

[0098] The embodiment of the present invention further provides a driving method of an array substrate, wherein the array substrate comprises a plurality of micro-light emitting devices, a plurality of micro-driving devices and a plurality of touch driving electrodes, that is, the driving method is applied to the array substrate provided by any of the above embodiments, such as Fig.24 As shown, Fig.24 A flow chart of a driving method for an array substrate provided in one embodiment of the present invention, the driving method comprising:

[0099] S101: The micro-drive device receives a signal;

[0100] S102: the signal of the micro-driving device corresponding to the touch driving electrode multiplexing is a touch driving signal.

[0101] refer to Figures 1 to 4 In the array substrate provided by the embodiment of the present invention, at least one touch drive electrode 4 is arranged corresponding to at least one micro-drive device 3. Therefore, in some embodiments of the present invention, the touch drive electrode 4 can reuse the signal transmitted to the corresponding micro-drive device 3 as the touch drive signal, that is, after the micro-drive device 3 receives the signal, each touch drive electrode 4 receives the signal transmitted to the corresponding micro-drive device 3 as the touch drive signal, so that the main drive chip does not need to specifically generate the touch drive signal, which greatly reduces the power consumption of the main drive chip.

[0102] Or, if Fig.25 As shown, Fig.25 A flow chart of a driving method of an array substrate provided in another embodiment of the present invention, the driving method comprising:

[0103] S201: micro-drive device output signal;

[0104] S202: The touch driving electrode uses the signal output by the corresponding micro-driving device as a touch driving signal.

[0105] In other embodiments of the present invention, the micro-drive device 3 can also be used to generate a touch drive signal. That is, after the micro-drive device 3 outputs a signal, each touch drive electrode 4 receives the signal output by the corresponding micro-drive device 3 as a touch drive signal. Since the touch drive signal of each touch drive electrode 4 is generated by the corresponding micro-drive device 3, it is not necessary for the main drive chip to generate the touch drive signal, which greatly reduces the power consumption of the main drive chip. In addition, since each micro-drive device 3 only needs to generate the touch drive signal of the corresponding touch drive electrode 4, for an array substrate having multiple micro-drive devices 3, the power consumption of each micro-drive device 3 is not large, so that the power consumption of the entire array substrate is also small.

[0106] Optionally, in some embodiments of the present invention, the touch driving electrode multiplexing corresponding to the micro driving device is a touch driving signal including:

[0107] The scanning signal of the micro-driving device corresponding to the touch driving electrode multiplexing is used as the touch driving signal.

[0108] Further optionally, in some embodiments of the present invention, Figure 5 As shown, the scanning signal includes a first sub-signal G1 and a second sub-signal G2, and the signal of the micro-driving device corresponding to the touch driving electrode multiplexing is a touch driving signal including:

[0109] The second sub-signal of the micro-driving device corresponding to the touch driving electrode multiplexing is a touch driving signal.

[0110] like Figure 5 As shown, since the micro-driving devices 3 of all rows synchronously receive the second sub-signal G2 in the T2 period, the touch driving electrode 4 multiplexes the second sub-signal G2 in the scanning signal as the touch driving signal, so that all the touch driving electrodes 4 can perform touch detection at the same time. Of course, the present invention is not limited to this. In other embodiments, the second sub-signals G2 of the micro-driving devices 3 of different rows are not synchronized. In this case, the touch driving electrodes 4 receive the touch driving signal in time division, that is, the touch driving electrodes 4 do not perform touch detection at the same time.

[0111] Based on any of the above embodiments, in some embodiments of the present invention, Fig. 20 As shown, the array substrate further includes a plurality of touch sensing electrodes 10 arranged in an array, and the driving method further includes:

[0112] Receiving a sensing signal output by any of the touch sensing electrodes 10;

[0113] The touch position is determined according to the position of the touch sensing electrode 10 .

[0114] Specifically, the micro-driving device 3 inputs a touch driving signal to the touch driving electrode 4 corresponding to the micro-driving device 3. Since each touch sensing electrode 10 is corresponding to the touch driving electrode 4 corresponding to at least one micro-driving device 3, a mutual capacitance is formed between the touch sensing electrode 10 and the corresponding touch driving electrode 4. When there is a touch, the capacitance value of the mutual capacitance between the touch sensing electrode 10 and the touch driving electrode 4 at the touch position will change, and the touch sensing electrode 10 will output a sensing signal to the main driving chip 5, and the main driving chip 5 determines the touch position according to the position (including the X coordinate and the Y coordinate) of the touch sensing electrode 10.

[0115] In some other embodiments of the present invention, Fig.21 As shown, the array substrate further includes a plurality of touch sensing electrodes 10 extending along the first direction and arranged along the second direction, and the driving method further includes:

[0116] Receiving a sensing signal output by any of the touch sensing electrodes 10;

[0117] The touch position is determined according to the position of the touch sensing electrode 10 and the position of the micro-driving device 3 that is outputting a touch driving signal or receiving a scanning signal.

[0118] When there is a touch, the capacitance value of the mutual capacitance between the touch sensing electrode 10 and the touch driving electrode 4 at the touch position will change, and the touch sensing electrode 10 will output a sensing signal to the main driving chip 5. The main driving chip 5 determines the X coordinate according to the coordinates of the touch sensing electrode 10, and determines the Y coordinate according to the coordinates of the row where the micro-driving device 3 that is inputting the scanning signal is located, so that the touch position can be determined according to the X coordinate and the Y coordinate.

[0119] The embodiment of the present invention further provides a touch display panel, such as Fig.26 As shown, Fig.26 A schematic diagram of the cross-sectional structure of a touch display panel provided for an embodiment of the present invention, the touch display panel includes an array substrate 12 and a color film substrate 13 arranged opposite to the array substrate 12, the array substrate 12 is the array substrate provided in any of the above embodiments, the color film substrate 13 includes a color resist layer 130, the color resist layer 130 includes color resists of multiple colors and a black matrix, wherein the color resists are arranged corresponding to micro-light-emitting devices of the same color as the color resists.

[0120] The embodiment of the present invention further provides a touch display device, such as Fig. 27 As shown, Fig. 27 This is a schematic diagram of a touch display device provided in an embodiment of the present invention, and the touch display device P includes a touch display panel provided in any of the above embodiments. In the embodiments of the present invention, the touch display device includes but is not limited to a smart bracelet, a smart phone, a tablet computer, and a digital camera.

[0121] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0122] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An array substrate, characterized in that: include: a first substrate; A plurality of micro light emitting devices, a plurality of micro driving devices and a plurality of touch driving electrodes are located on one side of the first substrate; One of the micro-driving devices is arranged corresponding to the plurality of micro-light-emitting devices, and is used to drive the plurality of micro-light-emitting devices to emit light; At least one of the touch driving electrodes is arranged corresponding to at least one of the micro-driving devices; wherein, along a direction perpendicular to the plane where the first substrate is located, the touch driving electrode and the corresponding micro-driving device at least partially overlap.

2. The array substrate according to claim 1, characterized in that: The touch driving electrode is located on a side surface of the correspondingly arranged micro-driving device that is away from the first substrate.

3. The array substrate according to claim 1, characterized in that: The micro-driving device comprises a scanning signal receiving end, and the micro-driving device receives a scanning signal through the scanning signal receiving end; The touch driving electrode is electrically connected to a scanning signal receiving end of the micro-driving device arranged corresponding to the touch driving electrode, so as to receive the scanning signal through the scanning signal receiving end.

4. The array substrate according to claim 1, characterized in that: The micro-driving device comprises a signal output terminal, and the touch driving electrode is electrically connected to the signal output terminal of the micro-driving device corresponding to the touch driving electrode, so as to receive the touch driving signal output by the micro-driving device through the signal output terminal.

5. The array substrate according to claim 1, characterized in that: It also includes a plurality of scan lines located on the first substrate; the plurality of scan lines are electrically connected to the plurality of micro-driving devices respectively, and the scan lines are used to provide scan signals to the micro-driving devices connected thereto; The touch driving electrodes are connected to the scanning lines connected to the micro-driving devices corresponding to the touch driving electrodes, so as to receive the scanning signals through the scanning lines.

6. The array substrate according to claim 1, characterized in that: It also includes a plurality of touch sensing electrodes, wherein the touch sensing electrodes are arranged corresponding to at least one of the touch driving electrodes; The touch sensing electrodes are arranged in the same layer as the touch driving electrodes, and the touch sensing electrodes are located on a side of the micro-driving device corresponding to the touch driving electrodes that is away from the first substrate.

7. The array substrate according to claim 1, characterized in that: It also includes a plurality of touch sensing electrodes, wherein the touch sensing electrodes are arranged corresponding to at least one of the touch driving electrodes; A second substrate is included between the touch sensing electrodes and the touch driving electrodes. The second substrate is located on a side of the touch driving electrodes away from the first substrate. The touch sensing electrodes are located on a side of the second substrate or the insulating layer away from the touch driving electrodes.

8. The array substrate according to claim 1, characterized in that: It also includes a plurality of touch sensing electrodes, wherein the touch sensing electrodes are arranged corresponding to at least one of the touch driving electrodes; In a direction perpendicular to the first substrate, the projection of the touch sensing electrode is located around the projection of the touch driving electrode corresponding to the touch sensing electrode, and at least partially surrounds the projection of the touch driving electrode.

9. The array substrate according to claim 8, characterized in that: In a direction perpendicular to the first substrate, the projection of the touch sensing electrodes is in a shape of a grid including at least two meshes, and the projection of one of the meshes includes the projection of at least one of the touch driving electrodes.

10. The array substrate according to claim 1, characterized in that: It also includes a main driver chip and a plurality of touch sensing electrodes; The plurality of touch sensing electrodes are arranged in an array, the plurality of micro-driving devices are arranged in an array, and each of the touch sensing electrodes is arranged correspondingly to a touch driving electrode corresponding to at least one of the micro-driving devices; The main driving chip is connected to the plurality of touch sensing electrodes respectively, and is used to determine a touch position according to a position of the touch sensing electrode when any of the touch sensing electrodes outputs a sensing signal.

11. The array substrate according to claim 1, characterized in that: It also includes a main driver chip and a plurality of touch sensing electrodes; The touch sensing electrodes extend along a first direction, and a plurality of the touch sensing electrodes are arranged in sequence along a second direction, and the first direction intersects with the second direction; The plurality of micro-driving devices are arranged in an array along the first direction and the second direction, with the second direction being a row direction, and the touch driving electrodes corresponding to the micro-driving devices in the same row are electrically connected; The main driving chip is connected to the multiple touch sensing electrodes respectively, and the main driving chip is electrically connected to the multiple micro-driving devices. The main driving chip is used to determine the touch position according to the position of the touch sensing electrode and the position of the micro-driving device that is outputting a touch driving signal or receiving a scanning signal when receiving a sensing signal output by any of the touch sensing electrodes.

12. The array substrate according to claim 1, characterized in that: The touch driving electrode is located at a side of the correspondingly arranged micro-driving device close to the first substrate.

13. The array substrate according to claim 1, characterized in that: It comprises a pixel substrate, wherein the pixel substrate is located between the first substrate and the micro-driving device, and the touch driving electrode is located on a surface of the pixel substrate facing the micro-driving device.

14. The array substrate according to claim 1, characterized in that: The micro-driving device comprises a through hole, and the touch driving electrode receives a touch driving signal through the through hole.

15. The array substrate according to claim 1, characterized in that: Among the multiple micro light-emitting devices corresponding to one micro-driving device, at least two micro light-emitting devices emit light of different colors.

16. The array substrate according to claim 1, characterized in that: The touch driving electrode at least partially overlaps with the micro-luminescent element connected to the corresponding micro-driving device.

17. The array substrate according to claim 1, characterized in that: Along a direction perpendicular to the plane where the first substrate is located, projections of at least two touch drive electrodes overlap with a projection of a corresponding micro-drive device.

18. The array substrate according to claim 1, characterized in that: The micro driving device includes a microIC.

19. A touch display panel, characterized in that: The invention comprises the array substrate according to any one of claims 1 to 18.

20. A touch display device, characterized in that: Includes the touch display panel as claimed in claim 19.

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